Ok, my cars had a bad idle, misses/sputters (due to excessive gas im sure), and has bad gas mileage (you can smell gas around it, and i dont have any leaks. My sparks plugs have a lot of build up on them from excessive gas). I hooked my lc-1 up and my a/fr's are from 9.1 - 12.5, but hardly ever above that. so its deff too rich. I swapped out injectors and fuel rail and nothing. Im thinking that the bucking is the fitv, but i've cleaned it out numerous times. so What are ya'll opinion.

 

No CEL?

If anything try unplugging your TPS plug and see what happens. Sounds like whats happening to my car and my TPS is going. Unplugging it stopped the bucking/bad gas mileage. Simple temporary fix.

 

Used to have a tps cel, but i changed and adjusted it, but ill deff give it a try

 

any luck my friend.

 

Yes any luck? im having a problem with bucking while giving it gas too..